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  1. Insulin Crystals, Light Micrograph
  2. Waziristan Hills - USGS Earth as Art
  3. Zenobe Gramme
  4. Plant pore, SEM
  5. Earth's rotation, artwork
  6. Heart and neck blood vessels
  7. California - USGS State Mosaic
  8. Sycamore leaf bud, light micrograph
  9. Women working in a munitions factory in 1915
  10. Torso bones
  11. Human brain anatomy, artwork
  12. Chromatin beads, artwork
  13. Gallstone
  14. Megatherium, Extinct Ground Sloth
  15. DNA molecule, artwork
  16. Railway carriages
  17. Container plants
  18. Allosaurus dinosaur skull
  19. Artificial heart, 19th century
  20. Laboratory Equipment
  21. Light passing through prism
  22. Euoplocephalus
  23. Oxyacetylene flame
  24. Heart
  25. Electronic and biologic systems, artwork
  26. Refraction of light by lenses
  27. Medical testing
  28. Pills being poured into a bottle after counting
  29. Telephone switchboard operator, 1914
  30. GABA crystals, light micrograph
  31. Heart disease, artwork
  32. Pharynx sagittal section
  33. Homo floresiensis
  34. Fossils, 18th century artwork
  35. Science classroom
  36. Human upper body showing bones, lungs and circulatory system
  37. Zinc-copper battery
  38. Great Auk (Pinguinus impennis), engraving
  39. Oil refining process
  40. Human Skin
  41. Pussy willow catkins (Salix sp.)
  42. Soap bubbles
  43. Female mammary gland. endocrine system
  44. A Pair Of Carnotaurus Dinosaurs Chasing A Group Of Gasparinisaura
  45. Cell structure
  46. The arteries of the brain
  47. Methane bubbles
  48. Lady Bell Plant Pollen